机构:
Univ Calif Los Angeles, David Geffen Sch Med, Dept Obstet & Gynecol, Los Angeles, CA 90095 USA
Kaiser Permenente, Simulat Ctr, Los Angeles, CA USAUniv Calif Los Angeles, David Geffen Sch Med, Dept Obstet & Gynecol, Los Angeles, CA 90095 USA
机构:
Massachusetts Gen Hosp, Dept Resp Care, Boston, MA 02115 USA
Harvard Univ, Sch Med, Dept Anesthesia, Boston, MA 02115 USAMassachusetts Gen Hosp, Dept Resp Care, Boston, MA 02115 USA